Windmill



3 Sheets--Sheet 1.

` (N5 Model.)

R. B. SIN CLAIR.

WINDMILL No. 457,168. Patented Aug. 4, 11891.

(No Model.) 3 Sheets-Sheet 2.

R1 B. SIN, CLAIR. I

WINDMILL.

110.457,168. Patented Aug. 1, 1891.

(No Model.) 3 Sheets-Sheet 3.

R. B. SIN CLAIR.

WINDMILL Patented Aug. 4, 1891.

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1f UNITED STATES PATENT OFFICE.

R. B. SIN CLAIR, OF ALAMEDA, CALIFORNIA.

WINDMILL.

' SPECIFICATION forming part of Letters Patent No. 457,168, dated August4, 1891. Y

Application filed December 2, 1890. Serial No. 373,345. (No model.) V

of the United States, residing at Alameda, in

the county of Alameda and State of California, have invented certain newand useful Improvements in Windmills; and I do, hereby declare thefollowing to be a full, clear, and exact description of said invention,such as will enable others skilled in the art to which it most nearlyappertains to make, use, and

- practice the same.

My invention has relation to certain new and useful improvements in windmills, which consists in the arrangement of parts and details ofconstruct-ion, as will be hereinafter more fully set forth in thedrawings, described, and pointed out in the specification.

My invention relates more particularly to the peculiar construction ofthe mill-wheel,

whereby a greater surface of the blades is presented to the action ofthe wind, and in the peculiar arrangement of the turn-table, whereby theleast possible friction is obtained during the rotation of the vane inor out of the wind.

My invention furtherconsists in providing a mill which shall be simplerin its construction, less expensive, simpler in its operation, and moredurable than any machine of a similar nature heretofore known to me.

Referring` to the drawings, forming a part of this application, whereinsimilar letters of` reference are used to denote corresponding' partsthroughout the entire specification and several views, Figure l is aside elevation of the wheel. Fig. 2 is an edge elevation of the same.Fig. 3 is an elevation of a portion of the wheel. Fig. 4 is a detail ofone of the blades, showing the strips e and c. Fig.A 5 is a sideelevation of a portion of the machine, showing the vane in elevation,and an edge view of the wheel. Fig. 6 is a view at right angles to Fig.5. Fig. 7 is a detail View, partly in section, showing the severalconnections of the plunger. Fig. 8 is a plan view of the machine, thewheel being removed. Fig. 9 is a sectional view taken through the upperportion of the turn-table, through the coupling e, and through thetubular plunger-rod guide. Fig. 10 is a detail edge view of the disk C',also showing the sliding box C2, and Fig. ll is a detail face view ofsaid disk.

Like letters of reference refer to like parts throughout the severalviews.

The letter A is used to indicate the operating-wheel, which consists ofa series of braces A A2, which are suitably secured together at theirouter ends and at their inner ends bolted or otherwise secured to thewheel-hub B. To the braces A', I bolt or secure the segmental strips,which when secured to the braces form the hoops b b2, to which I attachthe wheelblades B. These blades are secured tothe segmental stripsbefore attachment to the braces, are formed slightly concaved, and aresecured to the segmental strips by means of the retaining-strips c c.The strip c is curved considerably more than stripe', and each isextended out from the blade, said extended portion being provided withan aperture to receive a bolt, which likewise passes into the segmentalstrip. By this means of securing the blades the outer or free edgesthereof project out, so as to leave the blades practically in an obliqueposition, thus providing larger surface for the action of the wind.

The hub B is rigidly mounted upon axle or shaft C, so that with eachrevolution of the wheel theV shaft is caused to rotate therewith. To theinner end of said shaft I secure the disk C', which is connected to thesliding box C2 by means of wrist-pin c2.

The operating-rod is represented by the letter D, and is fulcrumed atits outer end between the arms (Z of the turn-table arm E, while itsouter end is pivoted to the top of the plunger-rod f3.

The tubular portion of the turn-table is indicated by the letter D2,which has secured therein the coupling e, which fit-s and issecured'within the countersunk portion e of the portion D3 of the plateF, hereinafter referred to. The tubular plunger-rod guide D4 passesthrough the lower portion of the turntable and screws into coupling e,so as to secure the upper portion of the turn-table in position, theextremity of said guide bearing against an internal shoulder e3 of thecoupling. Said portion of the turn-table is provided with theright-angular extending arms E E', oneof which has formed thereon thearms d, between which the operating-rod is fulcrumed, while to the otherI secure the vane "E2, which may be operated. in any suitable lolmanner-as, for instance, by means of chain f. In order to maintain thevane in its truel upright position, so as to prevent the tilting`thereof and getting out of true line, I secure the same to arm E bymeans of one long bolt h passing entirely through. The lower tubularplunger-rod guide I secure t0 the standards of t-he frame by means ofthe plates F F in order to maintain the same rigidly in position, but atthe same time allow of the guide turning freely therein. Through theupper portion of the table and lower tubular guide passes and Works theupper portion of the plunger-rod f3 and the chain f, which controls thevane E2. Said chain extends downward and has the weightf attachedthereto. l

ltion through the medium of sliding box C2,

which is operated by disk C by the'rotation of the wheel A. p

Having thus described my invention, what I claim as new, and desire tosecure protection in by Letters Patent of the United States, 1s

In a windmill, the combination of a turntable provided at its lower endwith an inwardly-extending annular ange, a coupling provided at itsupper end with an outwardlyextending annular ange seated upon the flangeof the turn-table, having its lower end cut away interiorly to form ashoulder, said cut-away portion being also screw-threaded, a guide-platehaving a tubular portion which is recessed at its upper end to receivethe lower reduced end of the coupling, and a plunger-rod guide passingthrough the tubular portion ot' the guide-plate and having its upper endscrew-threaded to engage the threaded portion ofthe coupling, so thatits extremity may bear against the interior shoulder of the coupling,substantially as set forth.

In testimony whereof I afix my signaturein presence of two witnesses.

R. B. SIN CLAIR. Vitnesses:

EDWIN W. TUCKER, N. A. ACKER.

